Strongly coupled ultrasmall-Fe7C3/N-doped porous carbon hybrids for highly efficient Zn–air batteries†
Abstract
This report presents a simple method to produce an ultrasmall-Fe7C3/N-doped porous carbon hybrid (u-Fe7C3@NC) as an excellent oxygen reduction reaction (ORR) electrocatalyst. A zinc–air battery assembled with u-Fe7C3@NC performs at a higher open potential (1.486 V) and at a lower discharge overpotential compared with the commercial Pt/C catalyst.